Winding carrier for freshly spun threads of artificial silk



Jan. 1l, 1944. T. GRAUER 2,338,933

wINDING CARRIER RoR RRRsRLY sPUN THREADS oF ARTIFICIAL SILK Filed July 13, 1940 ng g! l 'ff/l i Patented Jan. 11, 1944 WINDING CARRIER FOR FRESHLY SPUN THREADS OF ARTIFICIAL SILK Theodor Grauer, Horn, Switzerland, assigner to Schoenteld & Co. Switzerland vormals Loeb,

Rorschach, Rorschach,

Application July 13, 1940, Serial No. 345,406 In Switzerland July 29, 1939 6 Claims.

The invention relates to winding carrier for freshly spun threads of artincialvsilk on which the package formed by the threads remains during the wet aftertreatment and the subsequent drying and which permits the necessary shrinking of the threads.

The shrinking is rendered possible by Winding the thread package on a reel-like carrier of a larger diameter than its nal diameter, and then reducing said diameter as required. The thus loosened windings must be so arranged on the winding carrier or spool of reduced diameter that in subjecting the thread package, while still in position on the carrier, to an after-treatment the resistance opposed to the flow of treatment liquid is uniform between all the thread windings inclusive of those at. the sides of the package adjacent the flanges of the spool. Consevquently.-the spool must have a certain sealing elect with respect to the sides of the thread package.

The carrier constructed according to this invention responds to these requirements and is an improvement on the winding carriers disclosed in my United States Letters Patent No. 2,074,217. In the winding carriers accordingto said patent the supporting rods and their locking members, which allow a larger or smaller diameter or the package to be alected, remain on the spool and pass with the latter through all the baths of the aftertreatment andthe drying ovens.

One object of the invention is, while maintaining the advantages of afore-mentioned carriers, to separate the movable parts conventionally remaining on the winding carrier or spool from the spools proper and to attach said parts permanently to the spinning machine. Thereby the advantage results that while the supporting area of each winding carrier is increased, a much smaller number of spool carriers is required to be installed in the spinning mill. The use of these spool carriers thus presents economic advantages.

Devices are known which allow of separating the longitudinal parts and their locking members from the spool and retaining these elements on the spool carrier. However, all these constructions present the drawback of lacking the above-mentioned sealing effect between the lateral windings of the thread package and the spool so that, therefore, the after-treatment is not uniformly effective. Further, the known constructions do not work in a positive manner.

The advantages inherent to the present invention over known constructions are the shape of the package, the manner in which the package is transferred 'from the larger dimensioned spool carrier to the smaller spool, which transfer does not cause any alteration of the shape of the pack- .age nor a, pinching of the threads, and the continuously effective sealing adjacent the ends ofthe package which is present in every stage of the aftertreatment.

In the accompanying drawing several constructinal examples of the invention are illustrated, in which Fig. 1- is a plan view of a spool with the package of artificial silk wound upon it;

Fig. 2 is a longitudinal sectional view of the empty spool on the line II-II of Fig. 3;

Fig. 3 is a part of a transverse cross-section of the empty spool Fig. 4 is part of a. transverse cross-section of the spool and of the supporting members inserted therein; and

Figs. 5 and 6 show in longitudinal sections two different constructional examples of a spool and spool holder or spool carrier.

As is shown in Fig. 1 of the drawing on the spool S artificial silk W is wound nearly up to the edges of the ilanges I and la. Fig. 2 illustrates the empty spool in a longitudinal section. The main body of the spool is composed of a pair of end rims Ib and Ic spaced apart and a plurality of bars 4 extending longitudinally between said rims. The bars 4 are slightly spaced apart circumferentially leaving slots 2 which open at one end through rim Ic at 2', Figs. 2 and 3. Through these slots 2 pass longitudinal thread package supporting elements 3 (Fig. 4), which appertain to the spool carrier and are removably introduced into the spool in the axial direction thereof and are then urged in the radial outward direction in order to provide for a larger circumference on which the thread is wound than the normal circumference of the spool. The longitudinal elements 3 are provided in a large number and are preferably of generally T-shaped cross-section so that the supporting surface for the silk thread is as large as possible and forms an almost continuous cylindrical surface. It is not necessary that the enlarged heads of theA supporting elements 3 can pass through the circumferential wall of the spool S, but owing to enlarged openings 2a in the end rim lc (Fig. 3), the supporting elements are introduced endwise into the interior of the spool. The bars 4 of the wall of the spools between which the slots 2 extend as well as the heads 3a of the elements 3 of the spool holder may therefore be amply dimensioned, the enlarged heads 3a of the supporting elements 3 being situated on the outer side and the .bars 4 on the inner side of the spool S. The shoulders on the radially inner parts of bar portions 4 are designated by numeral 2| in Figs. 2, 3, 5 and 6. At the points where the slots 2 register with the openings 2a, the shoulders 2i which extend from the bar portions 4 in opposite directions toward each other, form interior supports located in the opposite disposition to seats 20 formedby the radially outer ends of the openings 2a.

When the spool is removed, the large surfaces with which the threads bear on the supporting elements during the winding are freed of their supports; the package being held on the inclined sides of the flanges I' and Ia of rims Ib and Ic so that it is able to shrink until it rests on the bar portions 4 which form the outer wall of the intermediate portion of the spool. .A very considerable advantage is obtained thereby which ensures the production of uniform silk.

.'Fig. 5 illustrates a modified constructional example in which the supporting members 3 are held in the desired position by conical camming y ports 5, and 5a and a locking screw thread 6. In this yembodiment the spool has openings at both ends corresponding to openings 2a of Fig 2, which would allow the members 3 to be inserted and removed from either end. Numeral 1 denotes the shaft of the spinning machine on which the spool is to be placed, and 8 is the spool carrier fixed to the shaft 1 and which is constructed according to the invention as an adjustable reel. In this embodiment the supporting members 3 project through slots 8b of a drumshaped part of the spool carrier 8. Upon the latter a spool S with identical flanges is slid until the ends of the bars 4 engage the disc-shaped rear portion 9 of the spool carrier which constitutes a spool winding position defining abutment means. Thereupon the knob I0 together with the conical parts 5, 5a is thrust inwardly and is locked on the thread 6 by turning the knob I0. The conical parts 5, 5a cause the longitudinal members 3 to be urged in radially outward directions and at the same time hold the spool I, la in axiallytrue winding position. The latter is now ready to receive the artificial silk thread which is wound between the inclined inner flange portions I and Ia, on the supporting members 3 which at this time are urged into their radially outward position and with a gradually increasing stroke of the traversing movement of the thread guide the thread package W is formed.

Instead of winding with a gradually increasing stroke of the thread guide the stroke may progressively be shifted along the spool or both kinds of winding may be used simultaneously or alternately.

After the package is finished the spool S carrying it is removed. To that end the locking by means of the screw thread 6 is released and the conical parts 5, 5a are pulled by the knob I0 towards the left in Fig. 5 whereby the supporting members 3 are pulled radially inwardly as the members 3 are provided with a tongue-shaped part I2 cooperating with an interior conical facing of the cone 5a. The package W no longer bears on the supporting members 3 but is held in position by its contact with the anges I, la and bears on the parts 4 of the spool only in the course of the after-treatment; thus the package is permitted to shrink unrestrictedly to the exf tent by which the circumference formed bv the parts 4 is smaller than that of the supporting members 3 of the spool carrier in their radially outward position.

moved and before the spool carrier is emptied, the helical spring II urges, the longitudinal members 3 together with the spool in the forward direction into bearing engagement with the flange or abutment 8a of the spool carrier, uso that then this spool is in spool-exchanging position. When an empty spool is put on the carrier, the knob I0 together with the conical parts 5 and 5a are urged to the right as seen in Fig. 5. The members 3 engage at Ilrst the end rims on which flanges I, Ia are formed and concomitantly force the spool endwise towards the shaft 1 luntil the spool abuts against the flange 9 of the spool carrier. Thus it is ensured that the spool is axially in the proper position so that the windings are correctly placed, i. e., exactly between the flanges' I and Ia.

A modified example of the invention is illustrated in Fig. 6 which differs from that shown in Fig. 5 inasmuch as locking balls are provided instead of the locking thread. Fig. 6 shows the device in the position which exists during the windlng. The supporting members 3 are in their outward position and they form the larger supporting circumference for the package W. This spool also has openings at both ends for insertion and removal of members 3.

The conical parts 5 and 5a are hollow and both are provided with interior conical faces. Balls I3 (only one being shown in Fig. 6) lock the conical parts to the shaft part I4 xed to the spool carrier as a spring I5 urges the balls against the narrower portion of the interior cone. When the winding of the package is finished and the spool-carrying the package is to be removed, a pull is exerted on the knob I6 in the outward direction, i. e., towards the left in Fig. 6. The hub I1 forces the balls out of the locking position, while the rim I8 abuts against the end wall I9 forming one part with the cone 5, whereby the conical parts 5 and 5a are displaced towards the left in Fig. 6 and the tongue parts I2 pull the supporting members 3 in the radially inward directions. The members 3 are guided between the end disk of the spool carrier 8 and the rim 8a.

In this manner a winding carrier or winding device is provided which works reliably and which properly seals the ends of the package against excessive action of the acid used in the aftertreatment.

I claim:

1. A Winding carrier for freshly spun threads of artificial silk, comprising in combination, a spool adapted to receive the package of wound threads and provided with radially disposed longitudinal slots open at one end, flanges at each end of said spool and having inner faces oppositely inclined against each other, a spool carrier adapted to be permanently placed on the spinning machine, radially disposed longitudinal supporting members for the thread having T shaped cross-section with their webs passing through said slots and their enlarged heads pro- :lecting beyond the circumference ofsaid spool, and axially displaceable means having outer and inner conical faces cooperating With said supporting members for urging said supporting members in the radial outward direction to provide for a larger almost continuous cylindrical circumference for the thread to be wound upon than When the completely wound spool is to be rethe circumference of said spool and for positively moving said supporting members in the .radially inward direction, at least one of said flanges of the spool being provided with apertures through which said heads of said supporting members pass to permit the spool to be slid endwise on and oil said spool carrier.

2.- A winding carrier for freshly spun threads of artificial silk, comprising in combination, a spool adapted to receive the package of wound threads and provided with radially disposed longitudinal slots open at one end, iianges at each end of said spool and having inner faces oppositely inclined against each other, a spool carrier adapted to be permanently placed on the spinning machine, radially disposed longitudinal supporting members for the thread having T shaped cross-section -with their webs passing through said slots and their enlarged heads pro- Jecting beyond the circumference of said spool, axially displaceable means having outer and inner conical faces cooperating with said supporting members for urging said supporting members in the radial outward direction to provide for a larger almost continuous cylindrical circumference for the thread to be wound upon than the circumference of said spool and for positively moving said supporting members in the radially inward direction, at least one of said anges of the spool being provided with apertures through which said heads of said supporting members pass to permit the spool to be slid endwise on and of! said spool carrier, a spring cooperating in the axial direction with said supporting members and moving same endwise against the end of the slots, and an'abutment facing on said spool carrier against which the slid on spool bears to ensure its correct position relatively to the spool carrier.

3. A winding carrier for freshly spun threads of artiiicial silk, comprising in combination, a spool adapted to receive the package of wound threads and provided with radially disposed longitudinal slots open at one end, flanges at each end of said spool and having inner faces oppositely inclined against each other, a spool carrier adapted to be permanently placed. on the spinning machine, radially disposed longitudinal supporting members for the thread having T shaped cross-section with their webs passing through said slots and their enlarged heads projecting beyond the circumference of said spool, axially displaceable means having outer and inner conical faces cooperating with said supporting members for urging said supporting members in the radial outward direction to provide for a larger almost continuous cylindrical circumference for the thread to` be wound upon than the circumference of said spool and for positively moving said supporting members in the radially inward direction, at least one of said flanges of the spool being provided with apertures through which said heads of said supporting members pass to permit the spool to be slid endwise on and off said spool carrier, a spring cooperating in, the axial direction with said supporting members and moving same endwise against the end of the slots, an abutment facing on said spool carrier against which the slid on spool bears to ensure its correct position relatively to the spool carrier, and a locking device for locking said displaceable means in their extreme positions 4. In a winding carrier for freshly spun threads of artificial silk, a spool for the thread package to be produced provided with longitudinally extending bars spaced apart so as to form radially directed longitudinally extending slots therebetween, end flanges on said spool having inner outwardly diverging faces, one of said flanges having apertures registering with said slots and forming radially outwardly disposed seats, a winding spindle, a spool carrier permanently mounted on said winding spindle, expansible package-supporting members operatively associated with said carrier and each having a crosssection including a radially extending portion and a circumferentially extending portion, said radial portions being movably arranged in said slots, the cross sections of said supporting members being smaller than said apertures, so that, when radially retracted, said members can pass through said apertures in sliding said spool coaxu ially on and oi said spool carrier, a winding positiondeiining abutment and a spool exchanging position defining abutment on said spool carrier, and shifting means arranged for concomltz-.ntly radially expanding said members into bearing engagement with said seats and axially moving said spool into bearing engagement with said winding position defining abutment, said shifting means also serving to concomitantly radially retract and axially return said members into bearing engagement .with said spool-exchanging position defining abutment when shifted to its spool-exchanging position.

5. In a winding carrier for freshly spun threads of artificial silk, a spool for the thread package to be produced provided with longitudinally extending bars spaced apart so as to form radially directed longitudinally extending slots therebetween, end flanges on said spool having inner outwardly diverging faces, one of said flanges having apertures registering with said slots and forming radially outwardly disposed seats, a winding spindle, a spool carrier permanently mounted at its inner end on said winding spindle, expansible package-supporting members operatively associated with said carrier and having a cross section including a radially extending portion, and a circumferentially extending portion, said radially extending portions being movably-arranged in said slots, the cross sections of said supporting members being smaller than said apertures, so that, when radially retracted. said members can pass through said apertures in sliding said spool with its inner end iirst coaxially on and reversely off said spool carrier, complementary spool-winding position defining abutment means at the inner ends of said spool and of said spool carrier, shifting means arranged for concomitantly radially expanding said members into bearing engagement with said seats and axially moving said spool with its inner end first into bearing engagement between said complementary spool-winding position defining abutment means, and spool-exchanging position defining abutment means terminally disposed outwardly on said spool carrier for cooperation with the adjacent ends of said members when the latter are radially retracted and concomitantly axially returned by'said shifting means into spoolexchanging position. f

6. In a winding carrier for freshly spun threads of artificialv silk, a spool for the thread package to be produced provided with longitudinally extending bars spaced apart so as to form radially directed longitudinally'extending slots, terminal flanges on said spool having inner outwardly diverging faces, the bar portions between said slots being of T-shaped cross section with the head ot the T disposed radially inwardly, one ci' said ilanges having apertures registering with said V slots and forming radially outwardly disposed seats, a spool carrier permanently mounted on an vassociated winding spindle, expansible package supporting members of T-shaped cross section` operatively associated with said carrier, the webs of the Ts being movably arranged in said slots while the heads of the Ts project beyond the circumference of said spool to provide for a substantially continuous cylindrical circumference for the thread to be wound on, which circumference is larger than the circumference of said spool, the cross section of said supporting mem bers being smaller than said apertures, so that, when radially retracted, said members can pass aasacss through said apertures in sliding said spool coaxially on and oi! said spool carrier, winding position defining and spool-exchanging position dechanging position deiining abutment when shifted to its spool-exchanging Position.

THEODOR GRAUER. 

